The role of dislocations in γ-iPP under plastic deformation investigated by X-ray line profile analysis

Samples of γ-iPP were prepared by crystallization at elevated pressures using a specially designed pressure chamber

G. Polt

2013

Scholarcy highlights

  • Samples of γ-iPP were prepared by crystallization at elevated pressures using a specially designed pressure chamber
  • The γ-phase was subsequently investigated by dedicated in-situ X-ray diffraction experiments during deformation using synchrotron radiation
  • Parameters such as the crystallinity, the density of dislocations and the coherently scattering domain size which in polymers corresponds to the lamella size, have been evaluated as a function of the strain by means of the multi-reflection X-ray line profile analysis
  • The latter is explained in terms of a model comprising the formation of misfit dislocations

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